The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2011
Filed:
Jan. 08, 2007
Applicants:
Bandi Parthasaradhi Reddy, Hyderabad, IN;
Kura Rathnakar Reddy, Hyderabad, IN;
Raji Reddy, Hyderabad, IN;
Dasari Muralidhara Reddy, Hyderabad, IN;
Inventors:
Bandi Parthasaradhi Reddy, Hyderabad, IN;
Kura Rathnakar Reddy, Hyderabad, IN;
Raji Reddy, Hyderabad, IN;
Dasari Muralidhara Reddy, Hyderabad, IN;
Assignee:
Hetero Drugs Limited, Hyderabad, Andhrapradesh, IN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/12 (2006.01); C07D 401/14 (2006.01); C07D 413/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing substituted sulfoxides either as a single enantiomer or in an enantiomerically enriched form. Thus, racemic omeprazole is reacted with (S)-camphorsulfonyl chloride to form a diastereomeric mixture and the diastereomers are separated by fractional crystallization, followed by deprotection to give esomeprazole.